Trees & woodland lore · Western North Carolina field companion
Willow oak
Quercus phellos
Whole tree — Quercus phellos. Species reference; the photographed specimen does not confirm the named variety. Age, pruning, and site affect its shape.☀ Full sunBerean Hunter ↗ · CC BY-SA 2.5Photo contextResized and converted to WebP; full original composition retained.
Problems to recognize in WNC gardens. These are documented susceptibilities, not a local outbreak report or a diagnosis. Weather, elevation and growing conditions change the risk.
Diseases & similar-looking injury
Anthracnose, leaf spots and powdery mildew may affect foliage. Cankers and root decay deserve attention when branches decline.
Insects to recognize
Oakworms, leafminers, scale and gall-making insects may occur. Many oak insects also feed birds; galls or a few eaten leaves rarely justify treatment.
When to look
Check unfolding leaves in a wet spring and caterpillar activity through summer.
A useful first step
Compare the amount of damage with overall tree vigor. Repeated heavy defoliation, rapid wilt or structural decay calls for Extension or an arborist.
More growing details
Read the leaves
Unlobed narrow blades have smooth edges. Find the tiny tip bristle and alternate arrangement rather than assuming willow.
Read the bark
Young bark is smooth gray; older trunks become shallowly furrowed.
Fruit & seed
Small rounded acorns confirm an oak despite the willow-like foliage.
Winter character
Clustered buds at twig tips distinguish an oak from true willow.
Origin & place
Widespread farther east in North Carolina, but absent to very rare across most mountain and foothill areas; one southern mountain occurrence is documented.
WNC Notes
Fine-textured oak for lower-elevation WNC sites; allow substantial rooting volume.
Sun Exposure
Full sun
MATURE HEIGHT (FT)
40–75
MATURE WIDTH (FT)
25–50
BLOOM SEASON
Spring
BLOOM COLOR
Catkins
FALL / WINTER COLOR
Yellow-bronze
Wet-Soil Tolerance
Moderate
Drought Tolerance
Moderate
LOOK CLOSELY
Two views, a closer look.
Place two photographs beside one another. Compare the overall plant with leaves, flowers, or bark when those views are available. Captions identify what each photograph actually shows. Images are not at the same scale; species references may show different cultivars.
Whole tree — Quercus phellos. Species reference; the photographed specimen does not confirm the named variety. Age, pruning, and site affect its shape.☀ Full sunBerean Hunter ↗ · CC BY-SA 2.5Photo contextResized and converted to WebP; full original composition retained.Species reference; does not confirm the named variety. Photograph subject: Young, emerging foliage & dangling catkins of staminate flowers.☀ Full sunKatja Schulz ↗ · CC BY 2.0Photo contextResized and converted to WebP; full original composition retained.Species reference; does not confirm the named variety. Photograph subject: Stem with pointed axillary buds.☀ Full sunK. Andre ↗ · CC BY 2.0Photo contextResized and converted to WebP; full original composition retained.Narrow, willow-like leaves. Taxon reference; photograph alone does not establish a named cultivar.☀ Full sunMichael Wolf ↗ · CC BY-SA 3.0Photo contextResized and converted to WebP; no diagnostic content altered.Gray, ridged bark. — species reference; cultivar identity not inferred.☀ Full sunK. Andre ↗ · CC BY 2.0Photo contextResized and converted to WebP; full original composition retained.
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